diff --git a/README.md b/README.md
index 7f4a2e7..af37f08 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ The package can be installed by adding `event_bus` to your list of dependencies
 
 ```elixir
 def deps do
-  [{:event_bus, "~> 1.3.8"}]
+  [{:event_bus, "~> 1.4.0"}]
 end
 ```
 
diff --git a/mix.exs b/mix.exs
index d5af581..e291888 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule EventBus.Mixfile do
   def project do
     [
       app: :event_bus,
-      version: "1.3.8",
+      version: "1.4.0",
       elixir: "~> 1.5",
       elixirc_paths: elixirc_paths(Mix.env()),
       build_embedded: Mix.env() == :prod,